Question No: 41 – (Topic 1)

A service provider has a Resilient Ethernet Protocol ring running as a metro backbone between its locations in one city. A customer wants to connect one site with one box redundant to the Resilient Ethernet Protocol ring at two different service provider locations. How can this be done without producing any Layer 2 loops within the network design?

Spanning tree at the service provider side only must be enabled.

Spanning tree at the customer side only must be enabled.

Flex Links at the service provider side only must be enabled.

Flex Links at the customer side only must be enabled.

EtherChannel at the service provider side and the customer side must be enabled.

Spanning tree at the service provider side and the customer side must be enabled.

Flex Links at the service provider side and the customer side must be enabled.

Answer: D

Question No: 42 – (Topic 1)

Your enterprise customer has asked where they should deploy flow monitoring in their network to monitor traffic between branch offices. What is your design recommendation?

at the edge of the network so that user traffic will be seen

at the central site, because all traffic from the remotes will be seen there.

in the core, because all traffic will be seen there

in the data center, because all user traffic will be seen there

Answer: B

Question No: 43 – (Topic 1)

A service provider creates a network design that runs MPLS in its WAN backbone using OSPF as the IGP routing protocol. What would be two effects of additionally implementing MPLS-TE? (Choose two.)

MPLS-TE is required to reroute traffic within less than 1 second in case of a link failure inside the backbone.

MPLS-TE is required to route different MPLS QoS service classes through different paths.

MPLS-TE and OSPF cannot be used together inside one MPLS network.

MPLS-TE cannot use OSPF for the traffic path calculation.

MPLS-TE is required to create backup paths independently from the IGP.

Answer: B,E

Question No: 44 – (Topic 1)

A company wants a design that would support OSPF through a service provider ATM

network. Which two OSPF network types should the designer use to establish OSPF neighborship between OSPF routers through the ATM network? (Choose two.)

A broadcast network will always work through ATM networks.

A broadcast network will work when the broadcast support is explicitly configured at the ATM network.

Explicit neighbor statements are required when a nonbroadcast network is configured.

Explicit neighbor statements are required when a point-to-multipoint network is configured.

A nonbroadcast network does not require DR selection.

Answer: B,C

Question No: 45 – (Topic 1)

You are the lead network designer for an enterprise company called ABC, and you are leading design discussions regarding IPv6 implementation into their existing network. A question is raised regarding older Layer 2 switches that exist in the network, and if any changes are required to these Layer 2 switches for successful IPv6 implementation. Which two responses should you give? (Choose two.)

IPv6 is transparent on Layer 2 switches, so there is no need to make any changes to the Layer 2 switches.

If IPv6 anycast deployment is planned, then make sure that Layer 2 switches support ICMPv6 snooping at Layer 2 switches.

If IPv6 anycast deployment is planned, then make sure that Layer 2 switches support DHCPv6 snooping at Layer 2 switches.

If IPv6 multicast deployment is planned, then make sure that Layer 2 switches support MLD snooping at Layer 2 switches.

If IPv6 anycast deployment is planned, then make sure that Layer 2 switches support ND snooping at Layer 2 switches.

Answer: A,D

Question No: 46 – (Topic 1)

Your organization is working on a design solution for a new Internet-based remote access virtual private network that has 1000 remote sites. A network administrator recommends GETVPN as the model because the network of today uses DMVPN, which results in a lot of background NHRP control traffic. What is a potential problem with using GETVPN for this

design solution?

GETVPN would require a high level of background traffic to maintain its IPsec SAs.

GETVPN is not scalable to a large number of remote sites.

GETVPN and DMVPN will not interoperate.

GETVPN key servers would be on public, hacker-reachable space and need higher security.

Answer: D

Question No: 47 – (Topic 1)

In an MPLS-VPN environment, what is the effect of configuring an identical set of route targets for a particular VRF, but then configuring nonidentical route distinguisher across multiple PE devices?

The routes will be correctly handled by the control plane, but there will be instances where routes take up twice as much memory.

The routes will propagate to the remote PE, but the PE will never install them in its forwarding table.

The routes will be rejected by the remote PE because they have a different RD than its routes.

The routes will not even be sent to any remote PE with a different RD.

Answer: A

Question No: 48 – (Topic 1)

Which restriction prevents a designer from using a GDOI-based VPN to secure traffic that traverses the Internet?

Question No: 49 – (Topic 1)

During a network design review, it is recommended that the network with a single large area should be broken up into a backbone and multiple nonbackbone areas. There are differing opinions on how many ABRs are needed for each area for redundancy. What would be the impact of having additional ABRs per area?

There is no impact to increasing the number of ABRs.

The SPF calculations are more complex.

The number of externals and network summaries are increased.

The size of the FIB is increased.

Answer: C

Question No: 50 – (Topic 1)

You are designing a network to support data, voice and video. Which two main factors will you address to improve network convergence? (Choose two.)